Vidya Balan becomes Big B's mother

The first look or the first trailor of movie 'Paa' was out!. The movie proved the role reversal of bollywood's most renowned father - son, Amitabh and Abhishek Bachchan in the reel life. The 67 - year - old actor Bachchan would be playing the role of a 13 - year old boy, diagnosed with Progeria. His real life son Abhishek is playing his father's character in the movie. And stunning beauty Vidya Balan is playing the role of Big B's mother in the movie. Amitabh Bachchan's fans would also have doubts in recognizing him after seeing his bald look wearing school uniform in the poster and promo of the movie that was unveiled. Amitabh Bachchan plays a boy named 'Auro' who actually looks 25 odd years older than him due to the genetic disease. The film has already gained palpable excitement among the audience due to real life role reversal. 'Paa' is set for release on November 13.